﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace PoliAsis.Domain.Common
{
    public class Utility
    {
        public static string GetMd5Hash(string input)
        {
            StringBuilder sBuilder = new StringBuilder();
            using (MD5 md5Hash = MD5.Create())
            {
                // Convert the input string to a byte array and compute the hash. 
                byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(input));

                // Loop through each byte of the hashed data  
                // and format each one as a hexadecimal string. 
                for (int i = 0; i < data.Length; i++)
                {
                    sBuilder.Append(data[i].ToString("x2"));
                }
            }
            // Return the hexadecimal string. 
            return sBuilder.ToString();
        }
        // Verify a hash against a string. 
        public static bool VerifyMd5Hash(string input, string hash)
        {
            // Hash the input. 
            string hashOfInput = GetMd5Hash(input);

            // Create a StringComparer an compare the hashes.
            StringComparer comparer = StringComparer.OrdinalIgnoreCase;

            if (0 == comparer.Compare(hashOfInput, hash))
            {
                return true;
            }
            else
            {
                return false;
            }
        }
    }
}
